Multichannel bidirectional optical transceiver

Abstract

A multichannel bidirectional optical transceiver is disclosed. The transceiver includes an optical fiber transmitting downstream optical signals and receiving upstream optical signals, a plurality of vertical surface light-emitting sources that generate the downstream optical signals and a plurality of vertical surface light-receiving detectors that receive the upstream optical signals. The transceiver also includes an optical coupler that outputs the downstream optical signals and the upstream optical signals received through the optical fiber to the optical fiber and the vertical surface light-receiving detectors, respectively.

1 . A multichannel bidirectional optical transceiver, comprising: 
 an optical fiber that transmits downstream optical signals and receives upstream optical signals;    a plurality of vertical surface light-emitting sources that generate the downstream optical signals;    a plurality of vertical surface light-receiving detectors that receive the upstream optical signals; and    an optical coupler that outputs the downstream optical signals and the upstream optical signals received through the optical fiber to the optical fiber and the vertical surface light-receiving detectors, respectively.    
   
   
       2 . The multichannel bidirectional optical transceiver according to  claim 1 , further comprising: 
 a first reflector that is located between the optical coupler and the vertical surface light-emitting sources and reflects the downstream optical signals generated from the vertical surface light-emitting sources onto the optical coupler; and    a second reflector that is located between the optical coupler and the vertical surface light-receiving detectors and reflects the upstream optical signals output from the optical coupler onto the vertical surface light-emitting sources.    
   
   
       3 . The multichannel bidirectional optical transceiver according to  claim 2 , further comprising: 
 a plurality of first band pass filters that are located on one surface of the optical coupler opposite to the first reflector and allow the downstream optical signals to be transmitted to the optical coupler; and    a plurality of second band pass filters that are located on the other surface of the optical coupler opposite to the second reflector and allow the upstream optical signals to be transmitted from the optical coupler to the second reflector.    
   
   
       4 . The multichannel bidirectional optical transceiver according to  claim 1 , further comprising a lens system that is located between the optical fiber and the optical coupler and converges the downstream optical signals and the upstream optical signals input through the optical fiber on the optical fiber and the optical coupler, respectively.  
   
   
       5 . A multichannel bidirectional optical transceiver, comprising: 
 a connection terminal for an optical fiber that transmits downstream optical signals and receives upstream optical signals;    a first array of vertical surface light-emitting sources arranged to generate the downstream optical signals;    a second array of vertical surface light-receiving detectors arranged to receive the upstream optical signals; and    an optical coupler arranged to output the downstream optical signals from the first array and output the upstream optical signals input through the connection terminal and the second array, respectively.    
   
   
       6 . The multichannel bidirectional optical transceiver according to  claim 5 , further comprising: 
 a first reflector arranged to reflect the downstream optical signals generated from the first array onto the optical coupler; and    a second reflector arranged to reflect the upstream optical signals output from the optical coupler onto the second array.    
   
   
       7 . The multichannel bidirectional optical transceiver according to  claim 6 , further comprising: 
 a plurality of first band pass filters arranged to allow wavelengths of the downstream optical signals to be transmitted to the optical coupler; and    a plurality of second band pass filters arranged to allow wavelengths of the upstream optical signals to be transmitted from the optical coupler to the second reflector.    
   
   
       8 . The multichannel bidirectional optical transceiver according to  claim 5 , further comprising a lens system that is located between the connection terminal and the optical coupler.  
   
   
       9 . The multichannel bidirectional optical transceiver according to  claim 5 , wherein the first array is a two-dimensional array.  
   
   
       10 . The multichannel bidirectional optical transceiver according to  claim 5 , wherein the second array is a two-dimensional array.  
   
   
       11 . The multichannel bidirectional optical transceiver according to  claim 5 , wherein the first and the second arrays are two-dimensional array.